Agyneta micaria ( Emerton 1882 )

Dupérré, Nadine, 2013, Taxonomic revision of the spider genera Agyneta and Tennesseellum (Araneae, Linyphiidae) of North America north of Mexico with a study of the embolic division within Micronetinae sensu Saaristo & Tanasevitch 1996, Zootaxa 3674 (1), pp. 1-189 : 118-120

Agyneta micaria ( Emerton 1882)

Figs 28 , 380–389 , map 25

Bathyphantes micaria Emerton 1882: 71 , pl. 22, f. 6. (Description 3).

Erigone zonaria Keyserling 1886: 195 , pl. 18, f. 256. (Description Ƥ).

Linyphia micaria Marx 1890: 528 .

Bathyphantes zonarius Petrunkevitch 1911: 219 .

Meioneta micaria Chamberlin & Ivie 1944: 88 (Transferred 3 from Bathyphantes ); Kaston 1948: 138, f. 292-294 (3, synonymised Ƥ).

Meioneta dactylata Chamberlin & Ivie 1944: 84 , f. 157. (Description Ƥ). (Holotype 3 from Georgia: N.W. Clayton, W 83º 28’: N 34º 53’, April 28, 1943, Wilton Ivie collector, AMNH). EXAMINED. NEW SYNONYMY.

Bathyphantes officiosus Barrows 1940: 133 , f. 6, 6A. (Description 3). Not examined, based on the illustrations provided by Barrows. NEW SYNONYMY.

Agyneta micaria Buckle et al. 2001: 101 . (Transferred from Meioneta ).

Type material: Bathyphantes micaria Emerton 1882 , 3 HOLOTYPE from New Haven, Conn., Oct. 1881. J.H. Emerton Coll. (unique number 22060). MCZ, EXAMINED.

Diagnosis: Males and females can be easily separated from all other species in the genus by their abdominal patterns ( Figs 384, 385 ). Males can be distinguished from all other species by the narrow, pointed dorsal cymbial tubercle and the squared ventral cymbial tubercle ( Fig. 381 ). Females are distinguished from all Agyneta by their wide, with rounded sides proximal part of scape ( Fig. 386 ).

Description: Male: Total length 1.82; carapace length 0.77, width 0.59.

CEPHALOTHORAX: Carapace brown, shiny, finely reticulate; suffused with gray along radiating lines and margin; trident mark present. Sternum, yellow suffused with gray, darker along margin. Clypeus height 2. Chelicerae light yellow, sometimes with dark gray V-band medially, excavated; ~ 10 seta-tipped tubercles; promargin four teeth, retromargin four tiny denticles and a projection near base of fang. Cheliceral stridulatory organ visible ~26 striae, well spaced. ABDOMEN: Patterned, with apical and basal dark, wide bands, flanking an off-white middle portion or apical and basal dark bands reduced ( Fig. 384 ). LEGS: Light yellow, coxae with dark mark apically, tip of femurs and metatarsus I-IV with dark gray marks; leg I total length: 3.16; leg III total length: 2.13; Tm I: 0.31, Tm IV: absent. GENITALIA: Palpal tibia with large, smooth retrolateral tibial apophysis; dorsal tibial apophysis absent; two retrolateral and one dorsal trichobothria ( Fig. 380 ). Cymbium expanded into a conical apex; glabrous depression present ( Fig. 380 ); dorsal cymbial tubercle smooth and pointed; ventral tubercle large, rugose; prolateral notch very deep ( Fig. 381 ). Paracymbium apical pocket medium, anterior pocket long and curved, posterior pocket absent ( Fig. 380 ). Embolus tip curved, rounded; small spines basally and ventrally; Fickert’s gland absent; ventral lamella absent; thumb long going beyond the embolus proper ( Fig. 382 ). Embolus proper set medially with bifid prong near base ( Fig. 382 ). Anterior terminal apophysis curved with long protrusions; posterior terminal apophysis large, well sclerotized; lamella characteristica long, with squared tip and basal prong ( Fig. 383 ).

Female: Total length 1.91; carapace length 0.71, width 0.59.

MAP. 25. Localities of Agyneta micaria ( Emerton 1882) , distribution based on material examined, distribution based on Paquin et al. 2010.

CEPHALOTHORAX: Same as in male. Chelicerae promargin five teeth, retromargin five denticles. Cheliceral stridulatory organ ~18 striae, well spaced. ABDOMEN: Patterned, off-white with two vertical dark bands lateroapically and latero-basally or two vertical dark bands latero-apically with two dark spots medially and a zigzag dark bands basally ( Fig. 385 ). LEGS: Light yellow, coxae apical mark, the tip of femurs, metatarsus and tarsus I-IV with dark gray marks, palpal femur and tibia with dark gray, palpal tarsus without claw; leg I total length: 3.92; leg III total length: 2.32; Tm I: 0.31, Tm IV: absent. GENITALIA: Epigynum with wide proximal part of scape with rounded sides; epigynal slits oval; pit hook depression absent ( Fig. 386 ); lateral lobes medium ( Fig. 387 ); stretcher small: pit medium ( Fig. 389 ). Median part of scape long; genital pores situated at base of lateral lobes ( Figs 388, 389 ). Internal genitalia with elongated, curved receptacula ( Figs 387, 388 ).

Other material examined: CANADA: Ontario: Rondeau Park, Black Oak Trail, 02.vi.1985, sweeping in forest, 13, L. Lesage ( CNC). USA: Alabama: Oak Mountain State Park, 01.xi.1939, 13, A. Archer ( AMNH); Wetumpka, 06.vii.1940, 13, A. Archer ( AMNH); Wilson Dam, vi.1954, 1 Ƥ, R. Schick ( AMNH). Arkansas: Cove Creek, 24.ii.1962, near creek, 1Ƥ, O., M. Hite ( CAS); Jonesboro, 19.i.1967, pitfall in oak-hickory, 1Ƥ, M. Hite ( CAS); Morrilton, 20.viii.1962, 1Ƥ, M. Hite ( CAS); Round Prairie 23.iv.1965, 13, 06–21. v.1965, 13 ( CAS); Sumpter, Pow-274, 05.i.1965, 1Ƥ ( CAS); no specific locality, 18–19.xi.1960, 131Ƥ, 24.iv.1961, pitfalls in leaf litter, 13, 19.v.1961, 1Ƥ, 20.x.1961, 13, 24.vii.1963, pitfall in Sorghum , 07.viii.1963, 1Ƥ, 14.viii.1965, 1Ƥ, 11.vi.1966, sweeping in cotton, 13 ( CAS). District of Columbia: Battery-Kemble Park, 18.v.1985, forest shrub and litter, 13, J. Coddington, K. Smith ( USNM); Rock Creek Park, Pierce Mill, 03.vii.1985, field edge, 1Ƥ, J. Coddington ( USNM). Florida: Gulf Island National Seashore, Fort Pickens on Santa Rosa Island, 15.viii.2000, 13 ( DBC); St. George Island, Potomar, 131Ƥ, L. Marx ( USNM). Georgia: Chikamauga Park, 25.viii.1936, 13, M. Hatch ( CAS). Illinois: Seneca, 01.vi.1942, 1Ƥ, D. Lowrie ( AMNH); Urbana, 13, Hyde ( AMNH); White Heath, 20.v.1939, 1Ƥ, J. Dirks ( AMNH). Indiana: Tremont, 12.x.1935, 13, D. Lowrie ( AMNH). Kansas: Manhattan, 10.i.1964, 13, Hite ( CAS). Kentucky: Lake State Park, 13.x.1965, 1Ƥ, J., W. Ivie ( AMNH); Lexington, vii–ix, alfalfa, 133Ƥ, J. Culin ( CNC); Mammoth Cave National Park, 27.viii–02.ix.1967, carrion trap in forest, 131Ƥ, S. Peck ( AMNH); Quicksand, 25.vi.1925, 1Ƥ, Crosby, Bishop ( AMNH). Louisiana: Tallulah, 05.iv. 1930, 304m, 13, Glick ( AMNH); W Feliciana Parish, 17km E St. Francisville, 28.iv–03. v.2002, 13, H., A. Howden ( AMNH). Massachusetts: Readville, 01.ix.1912, 13, J. Emerton ( AMNH). Maryland: College Park, 05.xi.1931, 13, C. Crosby ( AMNH); Kensington, 01.ix.1945, 1Ƥ, E. Chapin ( USNM); Patuxent Wildlife Research Center, 01.viii.1993, 1Ƥ, 26.iv.1994, 132Ƥ, 19.v.1994, 1Ƥ, 02.vi.1994, 1Ƥ, 07–13. vi.1994, 1 Ƥ, 24.vi.1994, 1Ƥ, 06.vii.1994, 1Ƥ, G. Hormiga ( USNM). Missouri: Columbia: xi.1904, 13, xi.1905, 13, C. Crosby ( AMNH); Dry Fork Creek, Rolla, 23.ix.1950, 1Ƥ, H.E.F. ( CAS); Pertie Springs, 16.vi.1963, low vegetation, 13, W. Peck ( CAS); Rolla, ix.1954, 13 ( CAS); Warrensburg, 01.vii.1962, sweeping shrubs, 13, 24.iii.1963, leaf litter in ditch, 13, 14.v.1963, stones under leaves, 13, W. Peck ( CAS). North Carolina: B.R. parkway, 1828m, 27.viii.1983, richland balsam, 13, R. Bennett ( CNC); Clingmans Dome, 2024m, 20.v.1957, 131Ƥ, J. Vockeroth ( CNC); Glenn Falls near Highlands, 22.vi.1991, mixed pine, hardwood, rhododendron forest, 2Ƥ, S. Larcher ( USNM); Nantahala Gap, 16.x.1926, 133Ƥ, Crosby, Bishop ( AMNH); Top Whitesides Mountain, 03.vii.1957, 13, S., D. Mulaik ( AMNH). New York: New York, xii. 1905, 1 Ƥ, C. Crosby ( AMNH). Ohio: Cantwell Cliffs, Rockbridge, 10.viii.1935, 131Ƥ, W. Ivie ( AMNH); no specific locality, 07.viii.1924, 13 ( AMNH). Oklahoma: near Spavinaw, 12.v.1984, 13, G. Hevel ( USNM); near Stillwater, vi– ix.1966, 332Ƥ, C. Bailey ( CAS). Pennsylvania: East of Jamison, Horseshoe Bend, Nashaminy Creek, v.1954, 13, vii.1955, 131Ƥ, no date, 53, W. Ivie ( AMNH). South Carolina: Francis Beidler Forest, 10 km NE Harleyville, 23.vi–06.vii.1987, bald cypress swamp, 13 ( CNC); Savannah River, 12-26.vi.1995, upland hardwood, 2Ƥ, M. Draney ( AMNH). Tennessee: Great Smoky Mountains National Park, sides of Mount Leconte, 08.vii.1933, 13, W. Gertsch ( AMNH); Little Pigeon, 09.vii.1933, 133Ƥ, W. Ivie ( AMNH); Mill Creek, Mount Leconte, 10.x.1926, 434Ƥ, Crosby, Bishop ( AMNH); Summit, Mount Leconte, 10.x.1926, 53, Crosby, Bishop ( AMNH); Montvale Springs, 18.iii.1929, 233Ƥ ( AMNH). Texas: 1.6km S Red River, 15.vi.1979, riverine forest floor, 1Ƥ ( CAS); Austin, 12.iii.1903, 1Ƥ, J. Comstock ( AMNH); Backhole, 07.vi.1994, 13, J. Ivy, G. Veni ( TMM); College Station, 26.x.1979, 13, D. Dean ( AMNH); Houston, 22.iii.1936, 13, S. Mulaik ( AMNH); Lockhart State Park, 13.iv.1963, 1Ƥ, W. Gertsch, W. Ivie ( AMNH). Wisconsin: University of Wisconsin Arboretum, Redwing Marsh, viii.1967, sweeping cattails, 13, M. MacArthur ( TMM). West Virginia: West Virginia University Forest Chestnut Ridge, 05– 12. vi.1989, 2 Ƥ, 12–19. vi.1989, 1 Ƥ, 19–26.vi.1989, 134Ƥ, 26.vi–03.vii.1989, 131Ƥ, 30.v–05.vi.1989, 43, 03– 10.vii.1989, 533Ƥ, 10–17.vii.1989, 231Ƥ, 01–08.v.1990, 931Ƥ, 08–15.v.1990, 1634Ƥ, 15–22.v.1990, 739Ƥ, 22– 29. v.1990, 23, 29.v–05.vi.1990, 136Ƥ, 05–12.vi.1990, 333Ƥ, 12–19. vi.1990, 2 Ƥ, 19–26. vi.1990, 2 Ƥ, 26.vi– 03. vii.1990, 23, 03–10. vii.1990, 13, 10–17.vii.1990, 331Ƥ, pitfalls in mixed oak-hardwood, D. Jennings ( USNM).

Distribution: Southeastern USA, north to Ontario and west to Texas.

Figures

FIGURES 25 – 30. 25. Agyneta protrudens (Chamberlin & Ivie 1933), chelicerae anterior view. 26. Agyneta maritima (Emerton 1919), chelicerae anterior view. 27. Agyneta fillmorana (Chamberlin 1919), embolus prolateral view. 28. Agyneta micaria (Emerton 1882), embolus prolateral view. 29 a. Agyneta decora (O. Pickard-Cambridge 1871), tracheal system dorsal view. 29 b. A. decora, tracheal base dorsal view. 30. A. decora, spiracles.

FIGURES 380 – 389. Agyneta micaria (Emerton, 1882). 380 – 384, Male. 385 – 389, Female. 380. Palp, retrolateral view. 381. Palp, prolateral view. 382. Embolus, prolateral view. 383. Radical division, retrolateral view. 384. 385. Abdomen, dorsal view. 386. Epigynum, ventral view. 387. Internal genitalia, ventral view. 388. Internal genitalia, dorsal view. 389. Distal part of scape, posterior view.